You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
153 lines
5.7 KiB
153 lines
5.7 KiB
# Perfetto tracing probes, has tracefs access.
|
|
type traced_probes_exec, system_file_type, exec_type, file_type;
|
|
type traced_probes_tmpfs, file_type;
|
|
|
|
# Allow init to exec the daemon.
|
|
init_daemon_domain(traced_probes)
|
|
tmpfs_domain(traced_probes)
|
|
|
|
# Write trace data to the Perfetto traced damon. This requires connecting to its
|
|
# producer socket and obtaining a (per-process) tmpfs fd.
|
|
perfetto_producer(traced_probes)
|
|
|
|
# Allow traced_probes to access tracefs.
|
|
allow traced_probes debugfs_tracing:dir r_dir_perms;
|
|
allow traced_probes debugfs_tracing:file rw_file_perms;
|
|
allow traced_probes debugfs_trace_marker:file getattr;
|
|
allow traced_probes debugfs_tracing_printk_formats:file r_file_perms;
|
|
|
|
# Allow traced_probes to access mm_events trace instance
|
|
allow traced_probes debugfs_tracing_instances:dir search;
|
|
allow traced_probes debugfs_mm_events_tracing:dir search;
|
|
allow traced_probes debugfs_mm_events_tracing:file rw_file_perms;
|
|
|
|
# TODO(primiano): temporarily I/O tracing categories are still
|
|
# userdebug only until we nail down the denylist/allowlist.
|
|
userdebug_or_eng(`
|
|
allow traced_probes debugfs_tracing_debug:dir r_dir_perms;
|
|
allow traced_probes debugfs_tracing_debug:file rw_file_perms;
|
|
')
|
|
|
|
# Allow traced_probes to start with a higher scheduling class and then downgrade
|
|
# itself.
|
|
allow traced_probes self:global_capability_class_set { sys_nice };
|
|
|
|
# Allow procfs access
|
|
r_dir_file(traced_probes, domain)
|
|
|
|
# Allow to temporarily lift the kptr_restrict setting and build a symbolization
|
|
# map reading /proc/kallsyms.
|
|
userdebug_or_eng(`set_prop(traced_probes, lower_kptr_restrict_prop)')
|
|
allow traced_probes proc_kallsyms:file r_file_perms;
|
|
|
|
# Allow to read packages.list file.
|
|
allow traced_probes packages_list_file:file r_file_perms;
|
|
|
|
# Allow to log to kernel dmesg when starting / stopping ftrace.
|
|
allow traced_probes kmsg_device:chr_file write;
|
|
|
|
# Allow traced_probes to list the system partition.
|
|
allow traced_probes system_file:dir { open read };
|
|
|
|
# Allow traced_probes to list some of the data partition.
|
|
allow traced_probes self:global_capability_class_set dac_read_search;
|
|
|
|
allow traced_probes apk_data_file:dir { getattr open read search };
|
|
allow traced_probes { apex_art_data_file apex_module_data_file }:dir { getattr open read search };
|
|
allow traced_probes dalvikcache_data_file:dir { getattr open read search };
|
|
userdebug_or_eng(`
|
|
# search and getattr are granted via domain and coredomain, respectively.
|
|
allow traced_probes system_data_file:dir { open read };
|
|
')
|
|
allow traced_probes system_app_data_file:dir { getattr open read search };
|
|
allow traced_probes backup_data_file:dir { getattr open read search };
|
|
allow traced_probes bootstat_data_file:dir { getattr open read search };
|
|
allow traced_probes update_engine_data_file:dir { getattr open read search };
|
|
allow traced_probes update_engine_log_data_file:dir { getattr open read search };
|
|
allow traced_probes { user_profile_root_file user_profile_data_file}:dir { getattr open read search };
|
|
|
|
# Allow traced_probes to run atrace. atrace pokes at system services to enable
|
|
# their userspace TRACE macros.
|
|
domain_auto_trans(traced_probes, atrace_exec, atrace);
|
|
|
|
# Allow traced_probes to kill atrace on timeout.
|
|
allow traced_probes atrace:process sigkill;
|
|
|
|
# Allow traced_probes to access /proc files for system stats.
|
|
# Note: trace data is NOT exposed to anything other than shell and privileged
|
|
# system apps that have access to the traced consumer socket.
|
|
allow traced_probes {
|
|
proc_meminfo
|
|
proc_vmstat
|
|
proc_stat
|
|
}:file r_file_perms;
|
|
|
|
# Allow access to read /sys/class/devfreq/ and /$DEVICE/cur_freq files
|
|
allow traced_probes sysfs_devfreq_dir:dir r_dir_perms;
|
|
allow traced_probes sysfs_devfreq_cur:file r_file_perms;
|
|
|
|
# Allow access to the IHealth and IPowerStats HAL service for tracing battery counters.
|
|
hal_client_domain(traced_probes, hal_health)
|
|
hal_client_domain(traced_probes, hal_power_stats)
|
|
|
|
# Allow access to Atrace HAL for enabling vendor/device specific tracing categories.
|
|
hal_client_domain(traced_probes, hal_atrace)
|
|
|
|
# On debug builds allow to ingest system logs into the trace.
|
|
userdebug_or_eng(`read_logd(traced_probes)')
|
|
|
|
# Allow traced_probes to talk to statsd for logging metrics.
|
|
unix_socket_send(traced_probes, statsdw, statsd)
|
|
|
|
###
|
|
### Neverallow rules
|
|
###
|
|
### traced_probes should NEVER do any of this
|
|
|
|
# Disallow mapping executable memory (execstack and exec are already disallowed
|
|
# globally in domain.te).
|
|
neverallow traced_probes self:process execmem;
|
|
|
|
# Block device access.
|
|
neverallow traced_probes dev_type:blk_file { read write };
|
|
|
|
# ptrace any other app
|
|
neverallow traced_probes domain:process ptrace;
|
|
|
|
# Disallows access to /data files.
|
|
neverallow traced_probes {
|
|
data_file_type
|
|
-apex_module_data_file
|
|
-apex_art_data_file
|
|
-apk_data_file
|
|
-dalvikcache_data_file
|
|
-system_data_file
|
|
-system_data_root_file
|
|
-system_app_data_file
|
|
-backup_data_file
|
|
-bootstat_data_file
|
|
-update_engine_data_file
|
|
-update_engine_log_data_file
|
|
-user_profile_root_file
|
|
-user_profile_data_file
|
|
# TODO(b/72998741) Remove vendor_data_file exemption. Further restricted in a
|
|
# subsequent neverallow. Currently only getattr and search are allowed.
|
|
-vendor_data_file
|
|
-zoneinfo_data_file
|
|
with_native_coverage(`-method_trace_data_file')
|
|
}:dir *;
|
|
neverallow traced_probes system_data_file:dir ~{ getattr userdebug_or_eng(`open read') search };
|
|
neverallow traced_probes zoneinfo_data_file:dir ~r_dir_perms;
|
|
neverallow traced_probes { data_file_type -zoneinfo_data_file }:lnk_file *;
|
|
neverallow traced_probes {
|
|
data_file_type
|
|
-zoneinfo_data_file
|
|
-packages_list_file
|
|
with_native_coverage(`-method_trace_data_file')
|
|
}:file *;
|
|
|
|
# Only init is allowed to enter the traced_probes domain via exec()
|
|
neverallow { domain -init } traced_probes:process transition;
|
|
neverallow * traced_probes:process dyntransition;
|
|
|